METHOD FOR THE DIAGNOSIS OF THERMAL RUNAWAY IN AN ELECTRIC BATTERY

METHOD FOR THE DIAGNOSIS OF THERMAL RUNAWAY IN AN ELECTRIC BATTERY

A method for the diagnosis of thermal runaway in an electric battery (1) having at least one stack (2) of electrochemical cells (3) connected to one another in series. The diagnosis method provides for the steps of: measuring a first electric voltage (Vcell-i) at the ends of each electrochemical cel...

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Hauptverfasser: SITTA, Ugo, ABBIATI, Andrea Benoit, POGGIO, Luca, LIGABUE, Elena, BETRO', Roberto, DONA', Irene, TRONCOSO, Matias
Format: Patent
Sprache:eng ; fre ; ger
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MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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creator SITTA, Ugo
ABBIATI, Andrea Benoit
POGGIO, Luca
LIGABUE, Elena
BETRO', Roberto
DONA', Irene
TRONCOSO, Matias
description A method for the diagnosis of thermal runaway in an electric battery (1) having at least one stack (2) of electrochemical cells (3) connected to one another in series. The diagnosis method provides for the steps of: measuring a first electric voltage (Vcell-i) at the ends of each electrochemical cell (3); measuring a second electric voltage (Vstack) at the ends of the entire stack (2) of electrochemical cells (3); calculating a difference between the second electric voltage (Vstack) and the sum of all first electric voltages (Vcell-i); and diagnosing a thermal runaway of an electrochemical cell (3), if the first electric voltage (Vcell-i) of the electrochemical cell (3) is smaller than a first threshold value (TH1) and if, simultaneously, the difference between the second electric voltage (Vstack) and the sum of all first electric voltages (Vcell-i) is smaller than a second threshold value (TH2).
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subjects MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
title METHOD FOR THE DIAGNOSIS OF THERMAL RUNAWAY IN AN ELECTRIC BATTERY
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